Hot Chilli

#b7513a

A red that is muted. It is mid — the hardest range to put text on, either colour struggles.

Hex

#b7513a

RGB

183, 81, 58

OKLCh

56.1% 0.138 34.1°

CIELAB (D50)

47.9, 41.1, 34.4

What is true of this colour, and of no other

  • 7 other named colours sit within ΔE00 2 of it.
  • It uses 69% of the chroma sRGB can show at this lightness and hue.
  • As text on white it measures APCA Lc 73.6; on black, Lc -28.1. The sign is the polarity, which the WCAG ratio discards.
  • Built into an eleven-step scale, 10 of the 10 adjacent pairs stay ΔE00 2 apart — see the ramp.
  • protanopia and deuteranopia and tritanopia shift it by ΔE00 30.5 and 33.5 and 39.2 — no red cone.

Text on this colour

White text

4.94:1 — passes AA

Black text

4.25:1 — large text only

White text is the better of the two at4.94:1. That is enough for body text.

The same colour, with one cone missing

As you see it

#b7513a

protanopia

#64643b · ΔE00 30.5

deuteranopia

#7b7b33 · ΔE00 33.5

tritanopia

#8f8f00 · ΔE00 39.2

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isCrimson Warrior at ΔE00 1.051: between 1 and 2 — a trained eye spots it when the two touch; nobody spots it across a room. What the numbers mean.

  • Crimson WarriorΔE00 1.051 · #b35138
  • Burnt OchreΔE00 1.288 · #bb4f35
  • Glowing CoalsΔE00 1.412 · #bc4d39
  • Orange VermillionΔE00 1.477 · #bc5339
  • Autumn GlazeΔE00 1.678 · #b3573f
  • Hearty OrangeΔE00 1.737 · #b44b34
  • Beni ShogaΔE00 1.93 · #b85241
  • Burnt BrickΔE00 2.026 · #b45241
  • GrenadierΔE00 2.08 · #c14d36
  • Red RiverΔE00 2.098 · #b95543
  • Crimson BoyΔE00 2.16 · #b44933
  • Overcast BrickΔE00 2.185 · #b3583d

11 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.